Malaysian opposition lawmaker Rafizi Ramli is due to be charged in court under the Official Secrets Act on Friday (Apr 8) after leaking classified information about the state fund 1MDB.

He was arrested outside the parliament gates on Tuesday for releasing information from the classified Auditor-General's report on state-owned development company 1Malaysia Development Berhad (1MDB).

The fund has been at the centre of controversy in Malaysia over its massive debt pile and allegations of financial mismanagement by its CEOs as well as advisory board, headed by Prime Minister Najib Razak.

Rafizi is the vice president of opposition Parti Keadilan Rakyat (PKR).